| 摘要 |
<p>Nicotinic acid esters of dextran and carboxymethyldextran are prepd. by treating the polysaccharide with nicotinyl chloride or its hydrochloride in an acid-binding solvent such as pyridine or DMF for 1/2-3 1/2 hr. at 80-120 degrees C, diluting with water and collecting the pptd. ester.</p> |
